Anything or anyone rejected as useless, worthless, or in excess of what is required(noun)

Garbage, rubbish, or trash(noun)

A land or region that is wild or uncultivated(noun)

A land or region that is devastated or ruined(noun)

The useless products of metabolism(noun)

Indigestible food residue(noun)

Disintegrated rock material resulting from erosion(noun)

Reduction in the value of an estate caused by act or neglect, esp by a life-tenant(noun)

Rejected as useless, unwanted, or worthless(adjective)

Produced in excess of what is required(adjective)

Not cultivated, inhabited, or productive(adjective)

Of or denoting the useless products of metabolism(adjective)

Of or denoting indigestible food residue(adjective)

Destroyed, devastated, or ruined(adjective)

Designed to contain or convey waste products(adjective)

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Use "waste" in a sentence

"We have the total waste of $225,496,741 and this, reduced to its actual significance, means that of the total actual terminations, 83.6 per cent. was _actual waste_ and only 16.4 per cent. legitimate terminations, while the great bulk of the last item of"

"Do you think that over a £billion a year in waste is a good thing in this system?"

"OK, if 13% admin waste is not enough to establish my point, then say 40%."